ghsa-rwch-8cp4-7v7r
Vulnerability from github
Published
2024-04-03 18:30
Modified
2025-06-04 15:30
Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_mirred: don't override retval if we already lost the skb
If we're redirecting the skb, and haven't called tcf_mirred_forward(), yet, we need to tell the core to drop the skb by setting the retcode to SHOT. If we have called tcf_mirred_forward(), however, the skb is out of our hands and returning SHOT will lead to UaF.
Move the retval override to the error path which actually need it.
{
"affected": [],
"aliases": [
"CVE-2024-26739"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-03T17:15:51Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_mirred: don\u0027t override retval if we already lost the skb\n\nIf we\u0027re redirecting the skb, and haven\u0027t called tcf_mirred_forward(),\nyet, we need to tell the core to drop the skb by setting the retcode\nto SHOT. If we have called tcf_mirred_forward(), however, the skb\nis out of our hands and returning SHOT will lead to UaF.\n\nMove the retval override to the error path which actually need it.",
"id": "GHSA-rwch-8cp4-7v7r",
"modified": "2025-06-04T15:30:24Z",
"published": "2024-04-03T18:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26739"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0117fe0a4615a7c8d30d6ebcbf87332fbe63e6fd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/28cdbbd38a4413b8eff53399b3f872fd4e80db9d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9d3ef89b6a5e9f2e940de2cef3d543be0be8dec5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e873e8f7d03a2ee5b77fb1a305c782fed98e2754"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f4e294bbdca8ac8757db436fc82214f3882fc7e7"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.